I'm sure there is a level of QC, but I'd imagine as with anything there could be duff batches, it is probably writing to them with the full details from the bottle, they may be able to pull any from that batch that are still out there if it is faulty.

is if it takes 10 minutes for you to burn with nothing the protection is 15 times that time if you are wearing cream spf 15, not 15 minutes added protection.

